/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.shardingsphere.mode.manager.listener;

import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import org.apache.shardingsphere.infra.spi.ShardingSphereServiceLoader;
import org.apache.shardingsphere.mode.manager.ContextManager;

import java.util.Collection;
import java.util.LinkedList;

/**
 * Context manager lifecycle listener factory.
 */
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public final class ContextManagerLifecycleListenerFactory {
    
    /**
     * Get context manager lifecycle listeners.
     *
     * @param contextManager context manager
     * @return got listeners
     */
    public static Collection<ContextManagerLifecycleListener> getListeners(final ContextManager contextManager) {
        Collection<ContextManagerLifecycleListener> result = new LinkedList<>();
        for (ContextManagerLifecycleListener each : ShardingSphereServiceLoader.getServiceInstances(ContextManagerLifecycleListener.class)) {
            ContextManagerLifecycleListenerModeRequired modeRequired = each.getClass().getAnnotation(ContextManagerLifecycleListenerModeRequired.class);
            if (null == modeRequired || modeRequired.value().equals(contextManager.getComputeNodeInstanceContext().getModeConfiguration().getType())) {
                result.add(each);
            }
        }
        return result;
    }
}
